EP 0932017 A1 19990728 - Method and device for measuring workpieces having internal and/or external screw thread or similar grooves
Title (en)
Method and device for measuring workpieces having internal and/or external screw thread or similar grooves
Title (de)
Verfahren und Vorrichtung zum Messen von Werkstücken mit internen und/oder externen Schraubengewinden oder dergleichen Nuten
Title (fr)
Procédé et dispositif pour mesurer des objets pourvus de filets de vis interne et/ou externe ou de rainures similaires
Publication
Application
Priority
NL 1008119 A 19980122
Abstract (en)
The invention relates to the determination of the complete two-dimensional axial cross section of internal and external screw threads and similar workpieces, wherein in a plane through the centerline of the workpiece, two screw thread profiles which are located diametrically opposite each other are measured through two two-dimensional scan measurements in this plane or through arithmetic construction based on two profile depth measurements with a measuring ball or measuring wire, further on the basis of the assumption that the screw thread profiles in question further have a known dimension and geometry, whereafter these two opposite profiles are linked to each other by performing one or more linked measurements such as, for instance, the outside diameter in the case of external screw thread and the core diameter in the case of internal screw thread. If a proper concentricity of the core diameter, the outside diameter and flank diameter is involved, it may suffice to measure or scan only one profile and one or more linked measurements.
IPC 1-7
IPC 8 full level
G01B 5/20 (2006.01)
CPC (source: EP US)
G01B 5/204 (2013.01 - EP US)
Citation (search report)
- [X] DE 19613175 A1 19971009 - BECK CHRISTIAN DR ING [DE]
- [X] DE 19613173 A1 19971009 - JENOPTIK JENA GMBH [DE]
- [X] BE 892136 A 19820816 - HYDRIL CO
- [A] EP 0710815 A2 19960508 - KRUPP POLYSIUS AG [DE]
- [A] US 4622751 A 19861118 - BERG JOHN W [US]
- [A] PATENT ABSTRACTS OF JAPAN vol. 11, no. 207 (P - 592) 4 July 1987 (1987-07-04)
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB IE IT LI NL PT SE
DOCDB simple family (publication)
EP 0932017 A1 19990728; NL 1008119 C2 19990726; US 6289595 B1 20010918
DOCDB simple family (application)
EP 99200183 A 19990122; NL 1008119 A 19980122; US 23598399 A 19990122